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The Dentist Plot Summary

Read the complete plot summary and ending explained for The Dentist (2020). From turning points to emotional moments, uncover what really happened and why it matters.


Dr. Alan Feinstone is a Los Angeles dentist who, despite his professional success, quietly suffers from extreme obsessive–compulsive disorder and a persistent fixation on cleanliness and perfection. On his wedding anniversary, he uncovers that his wife Brooke is having an affair with the poolman, Matt. After the moment ends, he arms himself and shadows Matt to Paula Roberts’ house, a friend of Brooke’s. To cover his plans, he fabricates a story of a surprise party and watches Paula invite Matt inside. When Paula’s dog lunges at him, he shoots it in self-defense before returning to his car and heading to the clinic.

Back at the dental practice, the day’s first appointment spirals as he hallucinates a child patient with rotting teeth and accidentally injures him. While Detective Gibbs begins to investigate Paula’s dog’s death, Alan treats April Reign, a beauty queen who becomes his second patient. He hallucinates that she is his wife and, while she’s unconscious, he undresses her and fondles her before attempting to strangle her. When she awakens, he snaps out of the vision and hides her pantyhose. He tells her manager, Steve Landers, that she’s still dizzy from nitrous oxide. Steve quickly realizes what happened, punches Alan, and threatens a lawsuit. The day ends early as Alan sends everyone home, including Sarah, a teenage patient who wants her braces removed.

That night, Brooke arrives at the practice to meet with Alan in a new opera-themed room. Under the pretence of a teeth cleaning, he sedates her and then removes her teeth and cuts off her tongue. The next morning, Detective Gibbs and Detective Sunshine arrive to question him about the disturbing events. After they leave, Matt discovers Brooke—alive but still sedated. Alan responds by stabbing Matt to death.

Sarah and Paula wait for him at the clinic, and Alan’s first glance at Paula leaves Sarah disappointed. Paula talks about Matt’s effectiveness, and Alan aggressively drills into Paula’s tooth, destroying it. His assistant Jessica questions his behavior, and he snaps out of the trance. He asks Jessica to finish, but she reveals she’s sent Paula home and he fires her. When Jessica threatens to expose the crime by pulling out April’s pantyhose, Alan kills her.

At the police station, Detective Sunshine learns that the bullet taken from Paula’s dog matches only one gun in the area: Alan’s. An IRS agent, Marvin Goldblum, tries to leverage Alan’s tax troubles for a free dental exam and payout, but Alan tortures him instead. The detectives rush to the Feinstone house and discover Matt’s body by the pool and Brooke, mutilated but alive, tied to the bed. Alan’s other assistant, Karen, discovers Marvin still in the dental chair; he is then killed by Alan when he attacks her with a needle full of air.

After Alan unwraps Sarah’s braces, he envisions her teeth rotting. She escapes and hides in a dental room where Marvin, bloodied, attacks him. Alan recaptures her, and Sarah pleads with him to brush her teeth three times a day and avoid candy; he relents briefly. The detectives arrive, but they’re too late to arrest him.

They pursue him to a university where he is teaching dentistry. In a frenzy, Alan directs his students to pull their patients’ teeth, and he hallucinates, firing at a dental student he mistakes for Matt. The detectives burst in as he escapes with a hostage, and he wanders into an auditorium where an opera singer practices. The singer morphs into Brooke and taunts him as he reaches out. Defeated, he falls to his knees and is arrested by the detectives.

Now institutionalized in a psychiatric hospital, Alan is wheeled away for a routine dental appointment. The dentist working on him is revealed to be his toothless wife Brooke, who applies brutal, violent pressure to his mouth.

The Dentist Timeline

Follow the complete movie timeline of The Dentist (2020) with every major event in chronological order. Great for understanding complex plots and story progression.


Wedding anniversary betrayal revealed

On the day of his wedding anniversary, Dr. Alan Feinstone discovers Brooke is cheating with the poolman, Matt. He retrieves his pistol and pursues Matt in his car. The chase leads him to Paula Roberts' house, a friend of Brooke's, where Alan watches Paula invite Matt inside. He concocts a story about a surprise party for Brooke.

Evening Home and Paula Roberts' House

Matt invited inside and dog attack

Alan follows Matt to Paula Roberts' house and watches as Paula invites him inside. Paula's dog attacks Alan during the encounter, and he shoots the dog in self-defense. After the confrontation, Alan heads toward his own car and drives away, still determined to find Matt.

Night Paula Roberts' House

First appointment and unsettling hallucination

At his dental practice, Alan's first appointment goes awry when he hallucinates a child patient with rotten teeth and accidentally stabs him. The disturbing incident foreshadows his escalating violence and mental unraveling. He ends the appointment visibly shaken and isolated.

Morning Dental Practice

April Reign visit; wife hallucination and outburst

As Detective Gibbs investigates Paula's dog's death, Alan treats April Reign, a beauty queen. He hallucinates that April is his wife and, while she is unconscious, engages in inappropriate behavior and then assaults her. He hides her pantyhose, and Steve Landers warns of potential lawsuits before Alan ends the day early and sends staff home.

Late Morning Dental Practice

Brooke arrives in opera-themed room

That night, Brooke meets Alan in a newly created opera-themed room at his practice. He sedates her under the pretense of cleaning her teeth, then pulls out her teeth and cuts off her tongue. The brutal act marks a dramatic escalation in Alan's violence.

Night Dental Practice

Morning questioning; Brooke is found alive; Matt is killed

The next morning, Detectives Gibbs and Sunshine come to the Feinstone house to question Alan. After they leave, Matt discovers Brooke alive but sedated, and Alan stabs Matt to death in a fit of rage. The murder underscores Alan's complete transformation into a serial killer.

Morning Feinstone House

Dental practice mayhem continues; Jessica threatens exposure

Sarah and Paula wait at the practice while Alan treats Paula with an abusive drilling session, destroying her tooth. His assistant Jessica questions his behavior, and he fires Jessica after she helps Paula leave. Jessica then pulls out April's pantyhose and threatens to expose him, prompting Alan to kill Jessica.

Afternoon Dental Practice

IRS extortion turns to torture

At the dental office, IRS agent Marvin Goldblum tries to leverage Alan's tax problems for a payout and a free dental exam, but Alan tortures him instead. The agent's demand for a payout escalates the peril surrounding Alan and deepens the institutional pressure against him.

Afternoon Dental Office

Police close in; Matt's body and Brooke found

Detectives Sunshine and Gibbs drive to the Feinstone house to question Alan further. Near the pool they discover Matt's body, and they break into the house to find Brooke mutilated but alive, tied to the bed. The investigation tightens as the net closes around Alan.

Afternoon Feinstone House

Karen is killed by Alan

Karen, another assistant, finds Marvin still in the dental chair and warns Alan. Alan attacks Karen and kills her by injecting air into her jugular vein. The body count continues to rise as the detectives close in.

Evening Dental Clinic

Sarah's escape and Marvin attack

Alan removes Sarah's braces and imagines her teeth rotting. He grabs a gun, but Sarah escapes and hides in a dental room. She encounters Marvin, blood-soaked, who attacks Alan before the detectives arrive to rescue Sarah.

Night Dental Clinic

Pursuit leads to the university

Detectives arrive to rescue Sarah but are too late to capture Alan. They trail him to a university, signaling a climactic pursuit through an academic setting. The chase escalates as Alan's break from reality deepens.

Night University

University confrontation and escape

At the university, Alan maniacsically teaches dentistry and orders his students to pull their patients' teeth. He hallucinates and shoots a dental student he mistakes for Matt. The detectives burst in, but Alan uses a hostage to escape.

Night University

Final confrontation in the auditorium

Alan wanders into an auditorium where an opera singer practices. The singer transforms into Brooke, who laughs at him as he reaches out. Defeated, he is arrested by the detectives in a bleak, theatrical finale.

Climax University Auditorium

Epilogue: Brooke as the dentist in a hospital

Alan is carted off to a psychiatric hospital for treatment. In a grim coda, his toothless wife Brooke appears as a dentist, working violently on his mouth, suggesting a disturbing reversal of power and control.

Epilogue Psychiatric Hospital

The Dentist Characters

Explore all characters from The Dentist (2020). Get detailed profiles with their roles, arcs, and key relationships explained.


Dr. Alan Feinstone

A successful Los Angeles dentist whose extreme OCD drives him toward increasingly violent acts, blurring professional precision with sadistic control. His meticulous routines mask a rapidly unraveling psyche as his jealousy and paranoia take over his practice and life.

🧠 OCD 🧼 Cleanliness 🔪 Violence 👨‍⚕️ Dentist

Brooke Feinstone

Alan's wife, initially the catalyst for his rage and a focal point of his obsessive controls. She survives the violence and is later revealed to be the dentist working on him in the psychiatric hospital, turning the tables in a dramatic twist.

💑 Spouse 🔍 Manipulation 🦷 Dentistry

Detective Gibbs

A detective chasing leads on the murders and disappearances linked to Alan's rampage. He, along with Detective Sunshine, represents law and order as they close in on the truth and confront the psychologist's terrifying break.

🕵️ Detective 🧭 Investigation

The Dentist Settings

Learn where and when The Dentist (2020) takes place. Explore the film’s settings, era, and how they shape the narrative.


Time period

1990s

The events unfold in a contemporary 1990s Los Angeles setting. Advances in dental technology and the era's social mores frame Alan Feinstone's obsession with cleanliness and perfection. The era's visual style supports a polished exterior hiding a violent, destabilized psyche.

Location

Los Angeles, California, Feinstone's dental clinic, university campus

Set mainly in Los Angeles, the story tracks the polished, ritual-driven world of a high-profile dentist. The action moves between his sterile clinic, his home, and key public spaces that reveal the societal veneer surrounding his life. The contrast between glamorous urban life and claustrophobic interiors underscores his need for control.

🏙️ Urban 🏥 Clinical 🗺️ Diverse city

The Dentist Themes

Discover the main themes in The Dentist (2020). Analyze the deeper meanings, emotional layers, and social commentary behind the film.


🧠

Mental Illness

The narrative centers on Alan Feinstone's extreme OCD, showing how compulsion distorts reality and fuels escalating violence. Ritualized dental practices mirror his uncontrollable impulses. The film uses close-ups of instruments and sterile spaces to emphasize a mind spiraling out of control.

🔪

Violence

Alan's restraint crumbles into brutal acts as the plot escalates from paranoid defensiveness to murder. The violence is integrated with his professional setting, making each act feel clinical and deliberate. Detective investigations peel back layers of deception and dread.

🦷

Dental Horror

Dentistry is reframed as a site of power and fear, where teeth become symbols of vulnerability. The film ties pain, control, and body manipulation to the toolset of a dentist. The horrifying flipside of a trusted profession drives the suspense.

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The Dentist Spoiler-Free Summary

Discover the spoiler-free summary of The Dentist (2020). Get a concise overview without any spoilers.


In a dusty frontier town where the clatter of wagon wheels competes with the hum of a makeshift dental drill, a lone practitioner fights to keep his modest office open against the harsh realities of the Wild West. Dr. Alan Feinstone is a meticulous, if financially strained, dentist whose obsession with precision and cleanliness stands in stark contrast to the rugged, untamed world that surrounds him. The town’s rough edges—sun‑baked streets, saloons filled with rowdy patrons, and an ever‑present sense of lawlessness—serve as a vivid backdrop for his daily struggle to provide proper care in a place where even basic supplies are hard to come by.

One day a desperate figure rides into town, his face shadowed by a weather‑worn hat and his eyes betraying a painful urgency. The gunslinger arrives with a simple, yet harrowing request: relief from an infected tooth that threatens his livelihood and survival. This encounter forces the dentist to confront a dilemma that blends the clinical with the chaotic, testing his resolve and his adherence to the strict standards he has built his life around. The contrast between sterile instruments and the gritty reality of frontier life infuses the story with a tense, almost noir‑like atmosphere, where every glance could conceal a hidden motive and every patient might be a ticking time bomb.

As the sun sets over the barren horizon, the uneasy partnership between the fastidious healer and the rugged outlaw hints at a deeper exploration of trust, desperation, and the thin line between order and anarchy. The film balances moments of dark humor with palpable suspense, inviting viewers to wonder how far a man will go to maintain his principles when the very world he inhabits seems determined to tear them apart. The stage is set for a clash that is as much about personal demons as it is about the harsh frontier that surrounds them.

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